Show the decisions
A portfolio is a place to show finished screens, but it is also a place to explain how the work was made. Images alone often hide constraints, decisions, and the path of improvement.
Create a reading path
When structuring it as something to read, start with the point, then move through background, role, choices, and result. Not everything needs to be long, but headings and short paragraphs give first-time visitors a clear path.
Explain technology choices
A technology stack is useful as a list, but it does not explain value by itself. Writing why a technology was chosen, which constraint it served, and what could improve next makes the work more concrete.
Make judgment easier
The goal is not to make yourself look larger than the work. It is to make your process and quality bar visible so another person can make a decision in a short amount of time.